The Messerschmitt Bf 109, frequently called Me 109, was a German World War II warrior airplane composed by Willy Messerschmitt and Robert Lusser throughout the early to mid 1930s. It was one of the first verifiably cutting edge warriors of the time, incorporating such headlines as all-metal monocoque development, a shut shelter, a retractable arriving rigging, and was fueled by a fluid-cooled, modified-V12 air motor.